| Verfasser | Häufigkeit |
| Koballa, Thomas R. |
3 |
| Chiappetta, Eugene Louis 1940- |
2 |
| Aylott, Nicholas 1970- |
1 |
| Carter, Elisabeth L. 1975- |
1 |
| Chiappetta, Eugene L. |
1 |
| Collette, Alfred T. |
1 |
| Ladrech, Robert 1957- |
1 |
| Luther, Kurt Richard 1956- |
1 |
| Poguntke, Thomas 1959- |
1 |